In another interpretation, the interferon-gamma (IFN-γ)/Signal transducer and activator of transcription 1 (STAT1)/inducible nitric oxide synthase (iNOS) axis was activated against T. gondii during infection; meanwhile, host-derived nitrate also gave assistance to the expansion of Enterobacteriaceae via nitrate respiration (52). The gene discussed is STAT1; the disease is infection.